Push player backwards with setVelocity

[TeeOS]

How exactly would you go about doing this again?

EDIT: It would also be nice to know how to detect a direction a player is facing.

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[Nexus]

you can get a player's forward vector using %player.getEyeVector();

I would suggest using that over %player.getForwardVector(), as that returns a 2D direction instead of a 3D one.

Alternatively, there is also %player.getMuzzleVector(0), which ignores when a player holds z to go into free look mode.

As far as using them with setVelocity, I believe the best implementation is

Code: [Select]

%player = <player object>;
%impulseamount = <some number>;
%player.setVelocity(VectorSub(%player.getVelocity(), VectorNormalize(%player.getMuzzleVector(0), %impulseAmount)));
This will take the player's current velocity into account, and cause them to accelerate backwards as opposed to losing all current momentum and suddenly going straight backwards.

[TeeOS]

I implemented it into the code where I wanted it and saved it, but the item doesn't show up in the spawn menu now.

[Port]

I implemented it into the code where I wanted it and saved it, but the item doesn't show up in the spawn menu now.

You caused a syntax error in your new code. Post it.

[TeeOS]

// Initial start up state
   stateName[0]                     = "Activate";
   stateTimeoutValue[0]             = 0.15;
   stateTransitionOnTimeout[0]       = "Ready";
   stateSound[0]               = weaponSwitchSound;

   stateName[1]                     = "Ready";
   stateTransitionOnTriggerDown[1]  = "Fire";
   stateAllowImageChange[1]         = true;
   stateSequence[1]   = "Ready";

   stateName[2]                    = "Fire";
   stateTransitionOnTimeout[2]     = "Smoke";
   stateTimeoutValue[2]            = 0.14;
   stateFire[2]                    = true;
   stateAllowImageChange[2]        = false;
   stateSequence[2]                = "Fire";
   stateScript[2]                  = "onFire";
   stateWaitForTimeout[2]         = true;
        stateSequence[1] = "%client.player.setVelocity(VectorSub(%player.getVelocity(), VectorNormalize(%player.getMuzzleVector(0), %impulseAmount)));"
   stateEmitter[2]               = LaserdanceFlashEmitter;
   stateEmitterTime[2]            = 0.05;
   stateEmitterNode[2]            = "muzzleNode";
   stateSound[2]               = LaserdanceShot1Sound;
   stateEjectShell[2]       = true;

   stateName[3] = "Smoke";
   stateEmitter[3]               = LaserdanceSmokeEmitter;
   stateEmitterTime[3]            = 0.05;
   stateEmitterNode[3]            = "muzzleNode";
   stateTimeoutValue[3]            = 0.01;
   stateTransitionOnTimeout[3]     = "Reload";

   stateName[4]         = "Reload";
   stateSequence[4]                = "Reload";
   stateTransitionOnTriggerUp[4]     = "Ready";
   stateSequence[4]   = "Ready";

};

Its most likely around this area. I know I'm going to look like an idiot when I post this and its going to be the simplest of problems able to be solved.

[Port]

The issue is that you just randomly put code in the field which is supposed to specify the animation for your weapon. Since you already defined a firing method in stateFire[2] (onFire), just define yourWeaponImage::onFire( %this, %obj, %slot ), place the code there instead and properly adjust the variable names.

[TeeOS]

Thanks, but ti still has the same problem of not showing up.

//Laserdance.cs

//audio
datablock AudioProfile(LaserdanceShot1Sound)
{
   filename    = "./LaserdanceShot1.wav";
   description = AudioClose3d;
   preload = true;
};
datablock AudioProfile(bulletHitSound)
{
   filename    = "./bulletHit.wav";
   description = AudioClose3d;
   preload = true;
};


//shell
datablock DebrisData(LaserdanceShellDebris)
{
   shapeFile = "./gunShell.dts";
   lifetime = 2.0;
   minSpinSpeed = -400.0;
   maxSpinSpeed = 200.0;
   elasticity = 0.5;
   friction = 0.2;
   numBounces = 3;
   staticOnMaxBounce = true;
   snapOnMaxBounce = false;
   fade = true;

   gravModifier = 2;
};



//effects
datablock ParticleData(LaserdanceTrailParticle)
{
     gravityCoefficient   = 0;
   dragCoefficient      = 5;
   windCoefficient      = 0.0;
   constantAcceleration   = 0.0;
   lifetimeMS      = 400;
   lifetimeVarianceMS   = 0;
   spinSpeed      = 100.0;
   spinRandomMin      = 50.0;
   spinRandomMax      = 150.0;
   useInvAlpha      = false;
   animateTexture      = false;

   textureName      = "./Spark3";

   //Interpolation variables
   colors[0]   = "0.0 1 0.1 1";
   colors[1]   = "0.0 1 0.2 1";
   colors[2]   = "0.0 1 0.3 1";

   sizes[0]   = 1;
   sizes[1]   = 0.4;
   sizes[2]   = 0.0;
   times[0]   = 0.0;
   times[1]   = 0.1;
   times[2]   = 1.0;
};

datablock ParticleEmitterData(LaserdanceTrailEmitter)
{
   ejectionPeriodMS = 10;
   periodVarianceMS = 1;
   ejectionVelocity = 0;
   ejectionOffset   = 0;
   velocityVariance = 0.0;
   thetaMin         = 90;
   thetaMax         = 90;
   phiReferenceVel  = 0;
   phiVariance      = 360;
   overrideAdvance = false;
   particles = "LaserdanceTrailParticle";
   uiName = "LaserdanceTrail";

};

//effects
datablock ParticleData(LaserdanceExplosionParticle)
{
   dragCoefficient      = 5;
   gravityCoefficient   = -0.1;
   inheritedVelFactor   = 0.2;
   constantAcceleration = 0.0;
   spinSpeed      = 100.0;
   spinRandomMin      = 50.0;
   spinRandomMax      = 150.0;
   useInvAlpha      = false;
   animateTexture      = false;

   textureName      = "./Spark3";

   //Interpolation variables
   colors[0]   = "0.0 1 0.1 1";
   colors[1]   = "0.0 1 0.2 1";
   colors[2]   = "0.0 1 0.3 1";

   sizes[0]   = 3;
   sizes[1]   = 1.5;
   sizes[2]   = 0.00;
   times[0]   = 0.0;
   times[1]   = 0.1;
   times[2]   = 1.0;
};

datablock ParticleEmitterData(LaserdanceExplosionEmitter)
{
   ejectionPeriodMS = 1;
   periodVarianceMS = 1;
   ejectionVelocity = 6;
   velocityVariance = 1.0;
   ejectionOffset   = 0.1;
   thetaMin         = 80;
   thetaMax         = 80;
   phiReferenceVel  = 0;
   phiVariance      = 360;
   overrideAdvance = false;
   particles = "LaserdanceExplosionParticle";

   uiName = "Laserdance Hit";
};

datablock ExplosionData(LaserdanceExplosion)
{
   //explosionShape = "";
   lifeTimeMS = 500;



   particleEmitter = LaserdanceExplosionEmitter;
   particleDensity = 10;
   particleRadius = 0.2;

   faceViewer     = true;
   explosionScale = "1 1 1";

   shakeCamera = true;
   camShakeFreq = "20.0 22.0 20.0";
   camShakeAmp = "1.0 1.0 1.0";
   camShakeDuration = 0.0;
   camShakeRadius = 10.0;

   // Dynamic light
   lightStartRadius = 0;
   lightEndRadius = 0;
   lightStartColor = "0.5 0.5 0.1";
   lightEndColor = "0 0 0";
};


AddDamageType("Laserdance",   '<bitmap:add-ons/Weapon_Laserdance/CI_Laserdance> %1',    '%2 <bitmap:add-ons/Weapon_Laserdance/CI_Laserdance> %1',0.2,1);
datablock ProjectileData(LaserdanceProjectile)
{
   projectileShapeName = "./bullet.dts";
   directDamage        = 150;
   directDamageType    = $DamageType::Laserdance;
   radiusDamageType    = $DamageType::Laserdance;

   brickExplosionRadius = 0;
   brickExplosionImpact = true;          //destroy a brick if we hit it directly?
   brickExplosionForce  = 10;
   brickExplosionMaxVolume = 1;          //max volume of bricks that we can destroy
   brickExplosionMaxVolumeFloati ng = 2;  //max volume of bricks that we can destroy if they aren't connected to the ground

   impactImpulse        = 400;
   verticalImpulse     = 400;
   explosion           = LaserdanceExplosion;
   particleEmitter     = ""; //bulletTrailEmitter;

   muzzleVelocity      = 90;
   velInheritFactor    = 1;

   armingDelay         = 00;
   lifetime            = 4000;
   fadeDelay           = 3500;
   bounceElasticity    = 0.5;
   bounceFriction      = 0.20;
   isBallistic         = false;
   gravityMod = 0.0;

   hasLight    = false;
   lightRadius = 3.0;
   lightColor  = "0 0 0.5";

   uiName = "Laserdance Bullet";
};

//////////
// item //
//////////
datablock ItemData(LaserdanceItem)
{
   category = "Weapon";  // Mission editor category
   className = "Weapon"; // For inventory system

    // Basic Item Properties
   shapeFile = "./Famas.dts";
   rotate = false;
   mass = 1;
   density = 0.2;
   elasticity = 0.2;
   friction = 0.6;
   emap = true;

   //gui stuff
   uiName = "Laserdance";
   iconName = "./Icon_Laserdance";
   doColorShift = true;
   colorShiftColor = "0.25 0.25 0.25 1.000";

    // Dynamic properties defined by the scripts
   image = LaserdanceImage;
   canDrop = true;
};

////////////////
//weapon image//
////////////////
datablock ShapeBaseImageData(LaserdanceImage)
{
   // Basic Item properties
   shapeFile = "./Famas.dts";
   emap = true;

   // Specify mount point & offset for 3rd person, and eye offset
   // for first person rendering.
   mountPoint = 0;
   offset = "0 0 0";
   eyeOffset = 0; //"0.7 1.2 -0.5";
   rotation = eulerToMatrix( "0 0 0" );

   // When firing from a point offset from the eye, muzzle correction
   // will adjust the muzzle vector to point to the eye LOS point.
   // Since this weapon doesn't actually fire from the muzzle point,
   // we need to turn this off. 
   correctMuzzleVector = true;

   // Add the WeaponImage namespace as a parent, WeaponImage namespace
   // provides some hooks into the inventory system.
   className = "WeaponImage";

   // Projectile && Ammo.
   item = BowItem;
   ammo = " ";
   projectile = LaserdanceProjectile;
   projectileType = Projectile;

   casing = LaserdanceShellDebris;
   shellExitDir        = "1.0 -1.3 1.0";
   shellExitOffset     = "0 0 0";
   shellExitVariance   = 15.0;   
   shellVelocity       = 7.0;

   //melee particles shoot from eye node for consistancy
   melee = false;
   //raise your arm up or not
   armReady = true;

   doColorShift = true;
   colorShiftColor = LaserdanceItem.colorShiftColo r;//"0.400 0.196 0 1.000";

   //casing = " ";

   // Images have a state system which controls how the animations
   // are run, which sounds are played, script callbacks, etc. This
   // state system is downloaded to the client so that clients can
   // predict state changes and animate accordingly.  The following
   // system supports basic ready->fire->reload transitions as
   // well as a no-ammo->dryfire idle state.

   // Initial start up state
   stateName[0]                     = "Activate";
   stateTimeoutValue[0]             = 0.15;
   stateTransitionOnTimeout[0]       = "Ready";
   stateSound[0]               = weaponSwitchSound;

   stateName[1]                     = "Ready";
   stateTransitionOnTriggerDown[1]  = "Fire";
   stateAllowImageChange[1]         = true;
   stateSequence[1]   = "Ready";

   stateName[2]                    = "Fire";
   stateTransitionOnTimeout[2]     = "Smoke";
   stateTimeoutValue[2]            = 0.14;
   stateFire[2]                    = true;
   stateAllowImageChange[2]        = false;
   stateSequence[2]                = "Fire";
   stateScript[2]                  = "onFire";
   stateWaitForTimeout[2]         = true;
   stateEmitter[2]               = LaserdanceFlashEmitter;
   stateEmitterTime[2]            = 0.05;
   stateEmitterNode[2]            = "muzzleNode";
   stateSound[2]               = LaserdanceShot1Sound;
   stateEjectShell[2]       = true;

   stateName[3] = "Smoke";
   stateEmitter[3]               = LaserdanceSmokeEmitter;
   stateEmitterTime[3]            = 0.05;
   stateEmitterNode[3]            = "muzzleNode";
   stateTimeoutValue[3]            = 0.01;
   stateTransitionOnTimeout[3]     = "Reload";

   stateName[4]         = "Reload";
   stateSequence[4]                = "Reload";
   stateTransitionOnTriggerUp[4]     = "Ready";
   stateSequence[4]   = "Ready";

};

function LaserdanceImage::onFire(%this,%obj,%slot)
{
   if(%obj.getDamagePercent() < 1.0)
      %obj.playThread(2, shiftAway);
   Parent::onFire(%this,%obj,%slot);
   %impulseAmount = 80;
   %player = %client.player;
   %player.setVelocity(VectorSub(%player.getVelocity(), VectorNormalize(%player.getMuzzleVector(0), %impulseAmount)));
}

[Honorabl3]

This most likely won't fix your thing not showing up, but this problem will come up sooner or later.

Replace:

function LaserdanceImage::onFire(%this,%obj,%slot)
{
   if(%obj.getDamagePercent() < 1.0)
      %obj.playThread(2, shiftAway);
   Parent::onFire(%this,%obj,%slot);
   %impulseAmount = 80;
   %player = %client.player;
   %player.setVelocity(VectorSub(%player.getVelocity(), VectorNormalize(%player.getMuzzleVector(0), %impulseAmount)));
}

With:

function LaserdanceImage::onFire(%this,%obj,%slot)
{
   if(%obj.getDamagePercent() < 1.0)
      %obj.playThread(2, shiftAway);
   Parent::onFire(%this,%obj,%slot);

   %impulseAmount = 80;
   %obj.setVelocity(VectorSub(%obj.getVelocity(), VectorNormalize(%obj.getMuzzleVector(0), %impulseAmount)));
}

[TeeOS]

This most likely won't fix your thing not showing up, but this problem will come up sooner or later.

Replace:
With:

The weapon shows up now, buut...

It doesn't push back the player when fired.

[Treynolds416]

You don't need to post the part of your code with emitter datablocks. Lots of people do it and its just an unnecessary pagestretch

[TeeOS]

Bumping. Still haven't solved the problem of pushing backwards.

[Nexus]

Bumping. Still haven't solved the problem of pushing backwards.

Add some echoes into your code to make sure it is executing correctly while firing the gun.

[-Jetz-]

You're using vectorNormalize wrong. It has only one argument, a vector which it converts to a unit vector (which getMuzzleVector already returns anyway). You'll then want to scale that vector using vectorScale(vector, scale). I recommend you split that line into several; nesting a ton of vector functions within each other makes a mess.

[Nexus]

You're using vectorNormalize wrong. It has only one argument, a vector which it converts to a unit vector (which getMuzzleVector already returns anyway). You'll then want to scale that vector using vectorScale(vector, scale). I recommend you split that line into several; nesting a ton of vector functions within each other makes a mess.

Whoops, that's my bad